package cn.tedu.jdbc;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.Scanner;

public class JDBCLogin02 {
    public static void main(String[] args) {
        try(Connection connection =DBUtil.getConnection();){

            Scanner scanner = new Scanner(System.in);
            System.out.println("请输入用户名:");
            String username = scanner.nextLine();
            System.out.println("请输入密码:");
            String password = scanner.nextLine();


            String sql = "SELECT nickname FROM userinfo WHERE username=? AND password =?";
            PreparedStatement ps = connection.prepareStatement(sql);
            ps.setString(1,username);
            ps.setString(2,password);

            ResultSet r = ps.executeQuery();
            if(r.next()){
                String nickname = r.getString("nickname");
                System.out.println("登录成功,欢迎您"+nickname);
            }else{
                System.out.println("账号或密码错误,请重新登录");
            }
        } catch (SQLException e) {
            throw new RuntimeException(e);
        }
    }
}
